DGII Series Closed Loop Hollow Rotary Actuators

DGII Series Closed Loop AR Series Hollow Rotary Actuators

The DGII Series is a line of of products that combine a high rigidity hollow rotary table with a closed loop stepper motor and driver package. It retains the ease of use of a stepper motor, while also allowing for highly accurate positioning of large inertia loads.

Contributes to Easier Equipment Design

The gear-reduction mechanism employs precision gears along with a proprietary adjustment mechanism that eliminates backlash. The repetitive positioning accuracy from a single direction is ±15 sec., while lost motion in a positioning operation from two directions is 2 arc minutes. These characteristics make the DGII series the ideal choice for applications in which accurate positioning is a must.

High Power and Rigidity

The hollow output table is integrated with a high rigidity crossroller bearing*. The structure improves permissible thrust load and moment load while maintaining high torque.
*Excludes the DG60

"Home Sensor Set" is Available as an Accessory

Since the sensor set comes with all the parts required for the return-to-home operation, less time is spent designing, fabricating and procuring parts related to sensor installation.

DG130 Sensor Installation Example

Direct Coupling for Higher Reliability

Equipment tables and arms can be installed directly on the output table. This saves you the hassle and cost of designing an installation mechanism, arranging necessary parts, adjusting the belt tension, etc. when mechanical parts such as belt and pulley are used for installation.

High Reliability Plus High Efficiency AlphaStep AR Series Motors

High Efficiency and Energy Saving

A closed loop AlphaStep AR Series stepper motor and driver package has been adopted as the motor. This creates a more efficient and energy saving product compared with conventional models.

The AR Series uses Oriental Motor's closed loop control to maintain positioning operation even during abrupt load fluctuations and accelerations. The rotor position detection sensor monitors the rotation. When an overload condition is detected, the AR Series will instantaneously regain control using the closed loop mode. When an overload condition continues, the AR Series will output an alarm signal, thereby providing reliability equal to that of a servo motor.

Adoption of a Rotor Position Detection Sensor (Resolver)

Because the sensor is compact and slim, the overall length of the motor has been reduced.

Performance such as heat resistance and vibration resistance is improved over regular optical encoders.

Because an encoder cable is not necessary, the motor and driver can be connected with just 1 cable.

Lower Heat Generation

Heat generation by the motor has been significantly reduced through higher efficiency.

Continues Operation Even with Sudden Load Fluctuation and Sudden Acceleration

Operates synchronously with commands using open loop control during normal conditions. In an overload condition, changes immediately to closed loop control to correct the position.

Alarm Signal Output in Case of Abnormality

If an overload is applied continuously, an alarm signal is output. When the positioning is complete, an END signal is output. This ensures the same level of reliability achieved by an advanced closed loop system or a servo motor.

Power Consumption: 66% Less* Than Conventional Model

Built-in Controller (Network) Type Driver

Built-in Controller (Stored Data) Type

Because the driver has the information necessary for actuator operation, the burden on the host PLC is reduced. The system configuration when using multi-axis control has been simplified.

Setting are configured using a control module (sold separately), data setting software or RS-485 communication.

How to Connect the Built-in Controller (Stored Data) Type

1. I/O

The positioning module (pulse generator) function is built into the driver, allowing the operation to use I/O by directly connecting to a switch box or PLC. Because a positioning module is not necessary on the PLC side, space is saved and the system is simplified.

2. Modbus (RTU)/RS-485

Operating data and parameters can be set and operation commands can be input using RS-485 communication. Up to 31 drivers can be connected to each serial communication module. Also, there is a function that enables the simultaneous start of multiple axes. The protocol supports Modbus (RTU), enabling connection with devices such as touch screen computers and PCs.

3. Factory Automation (FA) Network

Use of network converter (sold separately) enables support with CC-Link, MECHATROLINK or EtherCAT communication. Operating data and parameters can be set and operation commands can be input using various communication methods.

Operation Type

With built-in controller packages, the motor's operating speed and traveling amount are set with operating data and operations performed based on the selected operating data. The operation type is 4-pattern.

When the command position is outside the setting value of the "round setting range" parameter, this function returns the command position and multiple rotation data to 0. Because the multiple rotation data is also returned to 0 you can perform position control even for continuous rotation operations in the same direction that use the absolute backup system.

*When building an absolute system, the accessory battery (sold separately) is necessary.

Hardware Overtravel

This function stops the actuator when the mechanical limit is exceeded.

Software Overtravel

This function stops the actuator when exceeding the limit set by the software. Depending on the setting, an alarm can also be output without stopping.

STOP Input (External stop)

This function forcibly stops operation when there is an abnormality or other issue. Select instantaneous stop, deceleration stop, or all windings off (actuator holding force is off) as the stopping method.

Alarm Code Output

Output alarm codes that are occurring.

Alarm History

Even if the power is turned off, up to 10 alarms that have occurred can be stored. This can be used for troubleshooting.

Velocity Filter

This is used to make adjustments when a smooth start/stop or smooth motion at low speed operation is required. Even for sudden operation command changes, this function controls the speed changes of the actuator to prevent them from becoming too large.

Teaching Function*1

Move the load to the target position and store the position data at this time as the positioning data.

I/O Monitoring*1

Check the ON/OFF status of the I/O signals.

Waveform Monitoring*2

Check the operating speed and I/O signals as a waveform.

*1 Can be performed with the control module sold separately (OPX-2A) or data setting software (MEXE02) (see Extended Functions).
*2 Can be performed with the data setting software (MEXE02) (see Extended Functions).

Extended Functions

Extended Functions

You can combine a control module (OPX-2A) (sold separately) or data setting software* (MEXE02) both to change parameters, add functions and perform various monitoring operations according to the needs of your system.

SCX11 Universal Controller

The SCX11 is a highly-functional and sophisticated controller equipped with program editing and execution functions. Use the SCX11 as a stored program controller to connect to any of Oriental Motor's standard pulse input drivers. The SCX11 is also able to control the motor via serial communications such as USB, RS-232C and CANopen.

Mounting Pedestal

This is a useful installation pedestal that enables the DGII Series to be used as a direct drive motor. Applications that require height and installation from the side can also be performed, expanding the range of available operations.